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单选题

The tree people in the Lord of the Rings—the Ents—can get around by walking. But for real trees, it’s harder to uproot. Because they’re literally rooted into the ground, they are unable to leave and go (26)_____.

    When a tree first starts growing in a certain area, it’s likely that the (27)_____ envelope—the temperature, humidity, rainfall patterns and so on—suits it. Otherwise, it would be unable to grow from a seedling. But as it (28)_____, these conditions may change and the area around it may no longer be suitable for its (29)_____.

    When that happens, many trees like walnuts, oaks and pines, rely (30)_____ on so-called “scatter hoarders”, such as birds, to move their seeds to new localities. Many birds like to store food for the winter, which they (31)_____  retrieve. When the birds forget to retrieve their food—and they do sometimes—a seedling has a chance to grow. The bird Clark’s nutcracker, for example, hides up to 100,000 seeds per year, up to 30 kilometers away from the seed source, and has a very close symbiotic (共生的) relationship with several pine species, most (32)_____ the white bark pine.

    As trees outgrow their ideal (33)_____ in the face of climate change, these flying ecosystem engineers could be a big help in (34)_____ trees. It’s a solution for us—getting birds to do the work is cheap and effective—and it could give (35)_____ oaks and pines the option to truly “make like a tree and leave”.

(3)

A
habitats
B
legacy
C
exclusively
D
vulnerable
E
elsewhere
F
forever
G
withdraws
H
replanting
I
subsequently
J
notably
K
fruitful
L
climatic
M
ages
N
offspring
O
breathing
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答案:

M

解析:

名词:

novel小说

potential潜力

predators食肉动物

species物种

varieties多样性

volunteers志愿者

动词:

classified把……分类

identified识别

referred提到,谈到

volunteers自愿

形容词:

exotic异国风情的

inherent内在的

marine海洋的

novel新颖的

potential潜在的

副词:

consciously有意识地

dramatically显著地

specifically特定地,专门地

26.  elsewhere

解析:副词辨析题。空格前是不及物动词go,可知空格处填副词。备选项有elsewhere(其他地方),exclusively(专门地),forever(永远),notably(引人注目地),subsequently(随后)。从句意来说,go是“去”,故应填elsewhere表示“去其他地方”。

27.  climatic

解析:形容词辨析题。空格前是the,后面是envelope,可知空格处填形容词。备选项有climatic(气候的),fruitful(硕果累累的),vulnerable(脆弱的、易受影响的)。再从句意来讲,空格后面有破折号,破折号起解释说明的作用。破折号后面的词是temperature(温度)、humidity(湿度)、rainfall(降雨),可知跟气候有关,故应填climatic。

28.  ages

解析:动词辨析题。空格前是it,后面是逗号,可知空格处填谓语动词,而且主语是it,谓语应是三单形式。再从句意上来看,“但是随着它……,这些条件可能变化……”,故应填ages,表示“长大,变老”。

29.  offspring

解析:名词辨析题。空格前是its,空格后是句号,可知空格处填名词。备选项有breathing(呼吸),habitats(栖息地),legacy(遗产),offspring(后代)。再从句意上看,“这些地方不再合适对于它的……”,看名词选项,只有offspring合适。

30.  exclusively

解析:副词辨析题。空格前是rely,空格后是on,可知空格处填副词,副词修饰动词。备选项有exclusively(专门地),forever(永远),notably(引人注目地),subsequently(随后)。再从句意上来讲,条件改变,环境不再适合其后代生长,这是树木后代生存仅剩的一个选择了,故应填exclusively(专门地)。

31.  subsequently

解析:副词辨析题。空格前是they,空格后是retrieve,可知空格处填副词。备选项有forever(永远),notably(引人注目地),subsequently(随后)。再看副词所在句的句意,“许多鸟喜欢为冬天储存食物,它们……取回”,句中行为存在一种先后关系,故应填subsequently。

32.  notably

解析:副词辨析题。空格前逗号前面句子完整,空格处所在部分是句子的状语成分。空格前是most,空格后是the white bark pine,可知空格处填副词或者形容词。备选项有forever(永远),notably(引人注目地),fruitful(硕果累累的),vulnerable(脆弱的、易受影响的)。再根据句意,the white bark pine 是前面 several pine species 的一个例子,故应填 notably。

33.  habitats

解析:名词辨析题。空格前是ideal,空格后是in,可知空格处填名词。备选项有breathing(呼吸),habitats(栖息地),legacy(遗产)。再根据句意,面对气候变化,树不再适应它们理想的……,故应填habitats。

34.  replanting

解析:动词辨析题。空格前是a big help in,后面是trees,可知空格处填doing形式,a big help in doing sth.。备选项有breathing(呼吸),replanting(重栽),withdraws(撤回、取钱)。再根据句意,空格处应跟树木相关,故应填replanting。

35.  vulnerable

解析:形容词辨析题。空格前是give,空格后是oaks,可知空格处填形容词。备选项有fruitful(硕果累累的),vulnerable(脆弱的、易受影响的)。再根据句意,此句讲述的是周围环境不适合生长的树木如何延续后代,可知此空应填vulnerable。

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